Re: drive in theater (synchronization audio-fm / video)

----- Original Message ----- =

From: "jm" <[email protected]>
To: "Mailing list for VLC media player users" <[email protected]>
Sent: Saturday, January 10, 2015 9:35 PM
Subject: Re: [vlc] drive in theater (synchronization audio-fm / video)


Hi

Thank you Doug for your answer

Le samedi 10 janvier 2015, 14:27:38 Doug a =E9crit :
> I think if you mean an on-site FM transmitter, you'll be fine, but if you
> mean you're going to send the audio to a regular broadcast station several
> miles (kilometers) away, and then have it broadcast back from there, =

> you'll
> have a serious synchronization problem.
=3D=3D=3D
I totally disagree.
Concidering a FM signal travels with about the speed of light, there will b=
e =

absolutely NO sync problems due to the distance af the broadcasting.
(300.000 km / second. So 30 km will introduce 0.1 millisecond of delay. One =

frame film is 42 Msecs.)

If you have a tremendous amount of equipment in the pipeline between input =

and arial / antenna, that might introduce a delay.
Now that will be constant, and VLC can compensate for that (it's an easy =

menu item)

If you have an internet connection, have a look at VLC's sync play, start =

with command line --control netsync --netsync-master etc...
Or, get Syncplay (google syncplay vlc).
Have two copies of the movie (one could be sound only), the network will =

keep 'm sync worry free.

hth,
Bouke


=3D=3D=3D
Yes, you're right, that is the configuration. My idea is to have the regula=
r =

FM
transmitter as master, and the video streaming driven as a slave using an FM
receiver to synchronize the video with regards to the audio...

-- =

jm - http://jmtrivial.info
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